build(deps): bump flask from 2.2.2 to 2.2.5 in /examples/message

Bumps [flask](https://github.com/pallets/flask) from 2.2.2 to 2.2.5.
- [Release notes](https://github.com/pallets/flask/releases)
- [Changelog](https://github.com/pallets/flask/blob/main/CHANGES.rst)
- [Commits](pallets/flask@2.2.2...2.2.5)

---
updated-dependencies:
- dependency-name: flask
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

examples/message/requirements.txt

@@ -1,5 +1,5 @@
 Flask==2.0.3; python_version < '3.7'
-Flask==2.2.2; python_version >= '3.7'
+Flask==2.2.5; python_version >= '3.7'
 pytest==7.0.1; python_version < '3.7'
 pytest==7.1.3; python_version >= '3.7'
 requests==2.27.1; python_version < '3.7'